<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <style>
        h2,
        p {
            margin: 0;
        }

        .box {
            margin: 30px auto;
            width: 300px;
        }

        #user,
        #message {
            box-sizing: border-box;
            width: 300px;
            border: 1px solid #000;
            padding: 10px;
            height: 100px;
            resize: none;
            display: block;
        }

        #user {
            padding: 0 10px;
            height: 30px;
            margin-bottom: 10px;
        }

        #btn {
            display: block;
            margin: 10px auto;
            width: 60%;
            height: 40px;
        }

        #list {
            border-top: 1px solid #000;
            padding: 10px 0 0;
            margin: 0;
            list-style: none;
        }

        #list li {
            position: relative;
            font: 14px/30px "宋体";
            border-bottom: 1px solid #000;
            padding: 0 15px;
            overflow: hidden;
        }

        .clos {
            position: absolute;
            right: 5px;
            top: 10px;
        }

        .clos2 {
            position: absolute;
            right: 5px;
            top: 30px;
        }

        .replay {
            position: absolute;
            right: 5px;
            top: 35px;
        }

        .mask {
            width: 100vw;
            height: 100vh;
            background: black;
            opacity: .3;
            position: absolute;
            left: 0;
            top: 0;
            display: none;
        }

        .comfirm {
            width: 200px;
            height: 120px;
            background: white;
            text-align: center;
            position: absolute;
            left: 50%;
            top: 30%;
            border-radius: 5px;
            transform: translate(-50%, -50%);
            overflow: hidden;
            display: none;

        }

        .comfirm button {
            /* position: absolute; */
            /* right: 10px; */
            float: right;
            margin-top: 20px;
            margin-right: 10px;
        }
    </style>
</head>

<body>
    <div class="box">
        <input type="text" id="user" value="小明" />
        <textarea id="message">我就是传说中的无敌小明</textarea>
        <button class="sortbtn">排序</button>
        <button id="btn">提交留言</button>
        <ul id="list">
            <li style="height: auto">
                <h2 class="user">小王说:</h2>
                <p>呼叫无敌小明</p>

                <a href="javascript:;" class="clos">删除</a>
                <a href="javascript:;" class="clos2">回复</a>
            </li>
            <li style="height: auto">
                <h2 class="user">老师说:</h2>
                <p>小明滚出去</p>
                <p>回复的内容</p>
                <a href="javascript:;" class="clos">删除</a>
            </li>
        </ul>


    </div>
    <script>
        var userEle = document.querySelector("#user");
        var messageEle = document.querySelector("#message");
        var subBtn = document.querySelector("#btn");

        var listEle = document.querySelector("#list");

        var sortEle = document.querySelector(".sortbtn");
        // var messageArr = [{
        //     user:"小王",
        //     message:"hello",
        //     time:""
        // },{
        //     user:"小王",
        //     message:"hello",
        //     time:""
        // }];
        var messageArr = [];


        subBtn.onclick = function () {
            let user = userEle.value;
            var message = messageEle.value;
            console.log(user, message);
            let obj = {
                user,
                message,
                time: new Date().getTime()

            }
            messageArr.push(obj);
            // console.log(messageArr)
            renderDom(messageArr);
        }



        // 排序；
        var flag = true;
        sortEle.onclick = function () {
            // 先排数据；
            if (flag) {
                messageArr.sort(function (a, b) {
                    return a.time - b.time;
                })
            } else {
                messageArr.sort(function (a, b) {
                    return b.time - a.time;
                })
            }
            flag = !flag;

            // console.log(messageArr);
            renderDom(messageArr);

        }


        listEle.innerHTML = "";
        function renderDom(data) {
            listEle.innerHTML = "";
            data.forEach(item => {
                let liEle = document.createElement("li");
                liEle.style.height = "auto";
                liEle.innerHTML = `
            <h2 class="user">${item.user}说:</h2>
            <p>${item.message}</p>
            <p>回复的内容</p>
            <a href="javascript:;" class="clos">删除</a>
            `;
                listEle.appendChild(liEle);
            })
        }


        // 1.数据驱动  2.时间（时间戳）排序；

    </script>
</body>

</html>